巻号一覧
37 巻 (2002)
- 4 号 p. 259-
- 3 号 p. 197-
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37 巻, 3 号
選択された号の論文の7件中1～7を表示しています
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大越 実2002 年 37 巻 3 号 p. 197-207
発行日: 2002年
公開日: 2010/08/05
ジャーナル フリーThe concept of clearance was introduced by the International Atomic Energy Agency (IAEA) in 1996 and has proven to be very useful for the management of extremely low-level solid materials generated from the decommissioning of nuclear facilities. Therefore, the Nuclear Safety Commission of Japan began setting clearance levels for solid materials generated from nuclear reactors in 1997, and published related reports in 1999 and 2001, respectively. The European Commission has also published several guides to clear metals, concrete, building and other solid materials from regulatory control. Some organizations, including the IAEA and the U. S. Nuclear Regulatory Commission, are still discussing how to establish clearance levels. This paper summarizes the present status of clearance in organizations in Japan and other countries. Also discussed information is compiled to realize the concept of clearance and the related problems.抄録全体を表示PDF形式でダウンロード (2356K) -
佐々木 朋三, 田代 純利, 藤永 英司, 石井 友章, 軍司 康義2002 年 37 巻 3 号 p. 208-221
発行日: 2002年
公開日: 2010/08/05
ジャーナル フリーThe transfer factors (TFs) of uranium (U), thorium (Th), radium (Ra) and lead (Pb) from soil to agricultural products were determined in order to estimate the internal radiation dose to the human body through ingestion. Samples of rice, potato, onion, cabbage, mandarin orange, spinach, apple and soil were collected from various districts in Japan. After appropriate pretreatment of the samples, concentrations in the sample solutions were measured by ICP-MS (for U, Th and Pb) and liquid scintillation counter (for Ra). It was recognized that TFs were 4.9×10-6 (apple) and 3.6×10-4 (spinach) for U, 2.8×10-6 (apple) and 2.3×10-4 (spinach) for Th, and 4.0×10-3 (hulled rice), 7.0×10-5 (onion) and 5.0×10-3 (hulled rice) for Pb. The TF of Ra, however, was not determined due to detection limitations. TF values obtained in the present study range from the same order of magnitude to 1/100 compared to the data in TRS364 as reported by IAEA. It was revealed that the internal radiation dose caused by the intake of uranium series radioactive nuclides through agricultural food ingestion was 16μSv/y, where Pb was the most contributory nuclide.抄録全体を表示PDF形式でダウンロード (3959K) -
川崎 位, 米沢 理加, 秋山 聖光, 水庭 春美, 宮部 賢次郎2002 年 37 巻 3 号 p. 222-229
発行日: 2002年
公開日: 2010/08/05
ジャーナル フリーPDF形式でダウンロード (5298K) -
五代儀 貴, 久松 俊一, 稲葉 次郎2002 年 37 巻 3 号 p. 230-235
発行日: 2002年
公開日: 2010/08/05
ジャーナル フリーWe collected natural and sociological environmental data related to the estimation of radiation dose by radionuclides that will be released from nuclear power facilities in Rokkasho Village. The consumption rate of livestock feed eaten by domestic animals is an important factor for the estimation of radioactive material transfer to the animals. We surveyed the amount of livestock feed in and around Rokkasho Village by means of questionnaires to stockbreeding farmers. The questionnaires were distributed to 90 farmers who kept one of five kinds of domestic animals or poultry; milking cattle, beef cattle, hogs, broilers and laying hens. Several farming companies were also included as subjects. Recovery of the questionnaires was 59%. The hogs, broilers and laying hens were fed compound feeds consisting of imported materials. The feed for milking cattle and beef cattle consisted of grass, field corn and other concentrates. The consumption rates of grass and field corn for dairy cattle were 20.4kg-fresh d-1 and 6.8kg-fresh d-1, respectively. The grass and field corn consumption rates for beef cattle were 3.1kg-fresh d-1 and 0.5kg-fresh d-1, respectively. All of these rates are lower than those used for dose assessment of the reprocessing plant, which is now under construction in Rokkasho Village.抄録全体を表示PDF形式でダウンロード (4661K) -
Anthony D. WRIXON, Alejandro BILBAO ALFONSO, Pedro ORTIZ LÓPEZ2002 年 37 巻 3 号 p. 236-244
発行日: 2002年
公開日: 2010/08/05
ジャーナル フリーThe International Atomic Energy Agency has statutory functions for the development of radiation safety standards. Its basic safety standards have, for many years, been based on the recommendations of the International Commission on Radiological Protection, taking account of the information on the biological effects of radiation exposure provided by the United Nations Scientific Committee on the Effects of Atomic Radiation. The latest version—the International Basic Safety Standards—was published in its final form in 1996, and, since then the Agency has been assisting with their implementation in a large number of States. The experience gained, combined with a more general reflection on these Standards, has led to the identification of a number of issues that will need to be considered in any future revision. A number of these issues arise largely through an insufficient recognition of the problems associated with turning the principles of protection into regulatory style requirements, which, out of necessity, need to be legally precise, but at the same time, enforceable. Some of these issues are discussed here.抄録全体を表示PDF形式でダウンロード (2392K) -
Satoshi IWAI2002 年 37 巻 3 号 p. 245-248
発行日: 2002年
公開日: 2010/08/05
ジャーナル フリーIn the Stockholm Statement of ICRP, the effective dose equivalent, HE, was defined as a radiological protection quantity based on quality factor Q (L) and tissue weighting factor, WT, specified in ICRP Publication 26 for estimation of stochastic effects of an individual. In ICRU Report 51, the effective dose equivalent, HE, was revised as a radiological protection quantity based on Q (L) and WT specified in ICRP Publication 60. But in ICRP Publication 74 and in ICRU Report 57, HE was retrogressively redefined as a quantity based on WT specified in ICRP Publication 26. This retrogressive redefinition has introduced confusion into the current definition of HE. The definition of HE of ICRU Report 51 should be declared to be valid in the latest documents of ICRP and ICRU, in order to eliminate the confusion. The effective dose, E, shows from 2 to 4 times as large as that of HE of ICRU Report 51 for proton, and maximum 2 times as large as that for neutron from 20 MeV to 10 GeV, although this HE employs Q (L) and WT in ICRP Publication 60. The revision of current radiation weighting factors, WR, is necessary for high energy proton and neutron to resolve this inconsistency.抄録全体を表示PDF形式でダウンロード (2276K) -
Andrew C. McEWAN2002 年 37 巻 3 号 p. 249-251
発行日: 2002年
公開日: 2010/08/05
ジャーナル フリーPDF形式でダウンロード (1771K)
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